Occurrence dataset

Open-ocean environments provide few obvious barriers to the dispersal of marine organisms.
Major currents and/or environmental gradients potentially impede gene flow. One
system hypothesized to form an open-ocean dispersal barrier is the Antarctic Polar Front,
an area characterized by marked temperature change, deep water, and the high-flow Antarctic
Circumpolar current. Despite these potential isolating factors, several invertebrate
species occur in both regions, including the broadcast-spawnin…

Occurrence dataset

In Antarctic waters, the superfamily Lysianassoidea is one of the most important amphipod groups both in terms of species number and abundance. Dominant members of this superfamily are species of the orchomenid complex, found throughout the Southern Ocean. This study presents the first molecular phylogenetic analysis based on a representative subset of the Antarctic species belonging to different orchomenid genera and hence provides a framework for a systematic revision of these taxa. The curren…

This dataset presents data from Russian Southern Ocean Investigations. It covers the following SOVIET ANTARCTIC EXPEDITIONS: 1. R.V. Ob Cruise I-II- March-May 1956, cruise II -January-March 1957.The stations of cruise III presented in these protocols are sampled in March 1958. The aim of zooplankton studies from the Ob cruises was the investigation of its composition, abundance and quantitative distribution in Antarctic. The material was sampled with closing vertical hauls of a Juday net ( mouth…

Occurrence dataset

This dataset was provided by Dhugal Lindsay (Japan Agency for Marine-Earth Science and Technology (JAMSTEC)). The data is extracted from a paper by Mark C. Benfield (Department of Oceanography and Coastal Sciences, Louisiana State University) and William M. Graham (Dauphin Island Sea Lab and University of South Alabama).
Four individuals of the large scyphozoan jellyfish Stygiomedusa gigantea were observed in the northern Gulf of Mexico over 2005 – 2009 by industrial remotely operated vehicles a…

Occurrence dataset

This data set gives all occurrences of marine oligochaetes in the Southern Ocean mentioned in the literature, from 1888 (first mention) until 2009. 25 species were mentioned, representative of three families, namely the Capilloventridae (1 genus, 1 species), the Enchytraeidae (3 genera, 16 species) and the Tubificidae. The latter family includes 3 subfamilies, the Rhyacodrilinae (1 genus, 1 species + 1 undetermined), the Phallodrilinae (3 genera, 5 species) and the Limnodriloidinae (1 genus, 1 s…

Occurrence dataset

The dataset contains over 6200 single records covering approx 95% of all literature available on Antarctic Polychaeta including the famous monographs of Olga Hartman. Additionally new records from the expeditions ANDEEP I-III and ANDEEP-Systco have been added.

Occurrence dataset

Argentina, Brazil, Chile, Ecuador, Peru, Uruguay, and more recently Venezuela have done marine biological work in the Antarctica, mainly around the Antarctic Peninsula and Drake Passage. A compilation of the marine biodiversity registered in the South American Antarctic literature is shown here. Most of the initial Brazilian manuscripts and one Argentinean have been screened to pull their georeferenced marine species occurrence. So far, 11 phyla, 56 genera, and 73 species have been recorded main…

Occurrence dataset

Open-ocean environments provide few obvious barriers to the dispersal of marine organisms.
Major currents and/or environmental gradients potentially impede gene flow. One
system hypothesized to form an open-ocean dispersal barrier is the Antarctic Polar Front,
an area characterized by marked temperature change, deep water, and the high-flow Antarctic
Circumpolar current. Despite these potential isolating factors, several invertebrate
species occur in both regions, including the broadcast-spawnin…

Occurrence dataset

The biodiversity research expedition TAN0204 with RS Tangaroa to the Ross Sea in 2004 yielded a new collection of 2,687 specimens of pycnogonids. As much as 25 dfferent species encompassing 14 genera and eight families were identified and their records are discussed herein.
The collection is archived in the Marine Invertebrate Collection of the New Zealand National Institute of Water and Atmospheric Research (NIWA). The majority (69%) of specimens are from the Nymphon australe group (Nymphonidae…

Occurrence dataset

The diversification of the teleost suborder Notothenioidei (Perciformes) in Antarctic
waters provides one of the most striking examples of a marine adaptive radiation. Along
with a number of adaptations to the cold environment, such as the evolution of antifreeze
glycoproteins, notothenioids diversified into eight families and at least 130 species. Here,
we investigate the genetic population structure of the humped rockcod (Gobionotothen
gibberifrons), a benthic notothenioid fish. Six population…